“What do you call a sad strawberry?”/“A blueberry.”

A berry riddle is:
   
Q: What do you call a sad strawberry?
A: A blueberry.
 
That is, the berry is “blue” (sad). The riddle has been cited in print since at least 1989.
 
     
Newspapers.com
26 November 1989, Palladium-Item (Richmond, IN), “Just for Laughs,” Pennywhistle Press, pg. ?, col. 1:
Question: What do you call a sad strawberry?
Answer: A blueberry.
Tracy Villeco Age 9
New Rochelle, New York
     
Google Books
Chewy Chuckles:
Deliciously Funny Jokes about Food
By Michael Dahl
Minneapolis, MN: Picture Window Books
2003
Pg. 8:
What do you call a sad strawberry?
A blue berry.
 
Twitter
Hayley Larue
@Hayley_Larue
What do you call a sad strawberry?...a blueberry!!! Hahahaha I was like crying when I heard that
11:17 PM · May 16, 2009·Twitter Web Client
   
Twitter
Helmet or heels
@helmetorheels
Joke of the Day: “What do you call a sad strawberry?” Answer: “A blueberry!”
9:43 PM · Aug 26, 2010·Hootsuite
 
Reddit—Jokes
Posted by u/ringaaling October 20, 2015
What do you call a sad strawberry?
A blueberry
   
Google Books
The Super, Epic, Mega Joke Book for Kids
By Whee Winn  
Grand Rapids, MI: Zonderkidz
2016  
Pg. ?:
What do you call a sad strawberry?
A blueberry.
 
Reddit—Jokes
Posted by u/paulyapos May 5, 2016
What do you call a sad strawberry?
A blueberry hahaha fuck you all
   
Reddit—Dadjokes
Posted by u/[deleted] May 23, 2016
What do you call a really sad strawberry?
A blueberry
 
Reddit—Jokes
Posted by u/apollo420317 December 27, 2019
What do you call a sad strawberry?
A blueberry
   
Reddit—Dadjokes
Posted by u/22i23 February 4, 2020
What do you call a sad strawberry?
A blueberry.
 
Reddit—JOkes
Posted by u/Plenty-Tap-7137 April 13, 2021
What do you call a sad strawberry
A blue berry